My Best Friend Became a Piglet, So I Have to Rescue Him

For three years, I thought he was just a brother I'd imagined. Until I received that letter asking for help: “Brother! Help! I'm trapped! Come save me, quick!” The letter was signed with the secret code known only to the two of us. Seeing it was the only way I knew this was all real. My dear brother had become a captive. A Demon Lord had imprisoned him in the Abyss, waiting for me to come to his rescue. After careful reasoning, I came to one conclusion: if I wanted to save him, I first had to become a god. So, for my brother, I was willing to become an emotionless killing machine. I ate a demon's heart and slaughtered every enemy. For my brother! I fought my way through one instance world after another, all for the day I could stand before the Demon Lord and say, “Give him back.” Two male leads #Brotherhood #System-based #Instance-based #Glutton #Passionate #Redemption #SatisfyingRead #InfiniteFlow #MaleAuthor #LevelingUp #Sequence #